/* 媒体查询 */
@media screen and (min-width: 500px) {
    body {
        box-sizing: border-box;
        margin: 100px auto;
        width: 100%;
        /* width: 375px;
        height: 702px;
        border: 1px solid grey; */
        position: relative;
        font-size: 20px;
    }
    *{
        font-size: 20px;

    }
    .van-image-preview{
        width: 375px;
        height: 702px;
        position: absolute;
    }
    .van-overlay{
        width: 375px;
        height: 702px;
        position: absolute;
    }
}